Grok Imagine Extend lets you continue and expand existing Grok Imagine video generations seamlessly. Starting from a previously generated video, you can extend the scene while maintaining visual style, characters, motion, and audio consistency. Requires the original task_id from the initial video generation.
About this model
Grok Imagine Extend lets you continue and expand existing Grok Imagine video generations, maintaining visual style, motion, and audio consistency throughout. Built by xAI, this model accepts a request_id from a previous Grok video and a guiding text prompt to seamlessly append 6 or 10 seconds of new footage. It supports 480p and 720p resolutions and can be chained multiple times to build longer sequences from a single starting point.
Cost analysis
| Provider | Cost | Notes |
|---|---|---|
| Muapi | From $0.05 per generation | Pay-per-run, no subscription. 6s 480p starts at $0.05; 10s 720p at $0.15. |
| Direct xAI API | Not publicly available | xAI Grok Imagine Extend is accessible via Muapi — no separate xAI API key required. |
Pay-per-run, no subscription. 6s 480p starts at $0.05; 10s 720p at $0.15.
xAI Grok Imagine Extend is accessible via Muapi — no separate xAI API key required.
* Competitor pricing is estimated based on similar model architectures and usage tiers.
Configuration schema
| Parameter | Type | Description | Default |
|---|---|---|---|
| Request Id | string | Request ID of the original video generation. Must be a valid ID returned from a previous Grok Imagine video generation. | |
| Prompt | string | Text prompt describing how to continue the video. | Continue the scene with the camera slowly panning right to reveal a vast ocean horizon, golden sunset light reflecting on the water. |
| Extend Duration | Enum (2 options) | Duration in seconds to extend the video. | 6 |
| Resolution | Enum (2 options) | Output video resolution. | 480p |
Request ID of the original video generation. Must be a valid ID returned from a previous Grok Imagine video generation.
Text prompt describing how to continue the video.
Continue the scene with the camera slowly panning right to reveal a vast ocean horizon, golden sunset light reflecting on the water.Duration in seconds to extend the video.
6Output video resolution.
480pDeveloper documentation
Get a Request ID — First generate a base video with Grok Imagine (text-to-video or image-to-video). Copy the request_id from the completed result.
Set Up the Extension:
request_id into the Request Id field.Generate — Submit to the grok-imagine-extend endpoint via the Muapi API. The model appends new footage from where the original clip ended.
Iterate — You can extend the same video multiple times. Each extension uses the latest request_id to continue from the new end frame.
Frequently asked
Grok Imagine Extend is an xAI model that continues an existing Grok Imagine video generation. You provide a request_id from a previous Grok video and a text prompt; the model appends 6 or 10 seconds of new footage while maintaining visual and audio consistency with the original clip.
Pricing varies by duration and resolution: 6s at 480p costs $0.05 per generation, 6s at 720p costs $0.10, 10s at 480p costs $0.10, and 10s at 720p costs $0.15. All billed pay-per-generation with no subscription required.
Yes. Each successful extension returns a new request_id. You can use that ID to extend again, chaining extensions to build longer sequences from a single starting clip.
Grok Imagine Extend supports 480p for faster, lower-cost generations and 720p for higher-quality output. Choose based on your end-use platform and budget.